very cool question: learn some new tricks, and get 10 points, why not?!
Hint to spare the pain : string(NaN)==
Similar Triangles - find the height of the tree
CONVERT TAN TO SIN
Sum the 'edge' values of a matrix
Combine the first and last names
Apply Function to Each Field of a Structure Array: Part 1
Block average ignoring NaN values
Fast 1-D Convolution (same shape)
Moving Product (Easy)
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